libgo: update to Go 1.8 release candidate 1

    
    Compiler changes:
      * Change map assignment to use mapassign and assign value directly.
      * Change string iteration to use decoderune, faster for ASCII strings.
      * Change makeslice to take int, and use makeslice64 for larger values.
      * Add new noverflow field to hmap struct used for maps.
    
    Unresolved problems, to be fixed later:
      * Commented out test in go/types/sizes_test.go that doesn't compile.
      * Commented out reflect.TestStructOf test for padding after zero-sized field.
    
    Reviewed-on: https://go-review.googlesource.com/35231

gotools/:
	Updates for Go 1.8rc1.
	* Makefile.am (go_cmd_go_files): Add bug.go.
	(s-zdefaultcc): Write defaultPkgConfig.
	* Makefile.in: Rebuild.

From-SVN: r244456

1 files changed, 10 insertions, 2 deletions

diff --git a/libgo/go/runtime/malloc_test.go b/libgo/go/runtime/malloc_test.go
index 4f926276..bc5530c 100644
--- a/libgo/go/runtime/malloc_test.go
+++ b/libgo/go/runtime/malloc_test.go
@@ -14,6 +14,10 @@ import (
 
 func TestMemStats(t *testing.T) {
 	t.Skip("skipping test with gccgo")
+
+	// Make sure there's at least one forced GC.
+	GC()
+
 	// Test that MemStats has sane values.
 	st := new(MemStats)
 	ReadMemStats(st)
@@ -25,7 +29,7 @@ func TestMemStats(t *testing.T) {
 		st.HeapInuse == 0 || st.HeapObjects == 0 || st.StackInuse == 0 ||
 		st.StackSys == 0 || st.MSpanInuse == 0 || st.MSpanSys == 0 || st.MCacheInuse == 0 ||
 		st.MCacheSys == 0 || st.BuckHashSys == 0 || st.GCSys == 0 || st.OtherSys == 0 ||
-		st.NextGC == 0 {
+		st.NextGC == 0 || st.NumForcedGC == 0 {
 		t.Fatalf("Zero value: %+v", *st)
 	}
 
@@ -34,7 +38,7 @@ func TestMemStats(t *testing.T) {
 		st.HeapIdle > 1e10 || st.HeapInuse > 1e10 || st.HeapObjects > 1e10 || st.StackInuse > 1e10 ||
 		st.StackSys > 1e10 || st.MSpanInuse > 1e10 || st.MSpanSys > 1e10 || st.MCacheInuse > 1e10 ||
 		st.MCacheSys > 1e10 || st.BuckHashSys > 1e10 || st.GCSys > 1e10 || st.OtherSys > 1e10 ||
-		st.NextGC > 1e10 || st.NumGC > 1e9 || st.PauseTotalNs > 1e11 {
+		st.NextGC > 1e10 || st.NumGC > 1e9 || st.NumForcedGC > 1e9 || st.PauseTotalNs > 1e11 {
 		t.Fatalf("Insanely high value (overflow?): %+v", *st)
 	}
 	if st.Sys != st.HeapSys+st.StackSys+st.MSpanSys+st.MCacheSys+
@@ -72,6 +76,10 @@ func TestMemStats(t *testing.T) {
 			t.Fatalf("PauseTotalNs(%d) < sum PauseNs(%d)", st.PauseTotalNs, pauseTotal)
 		}
 	}
+
+	if st.NumForcedGC > st.NumGC {
+		t.Fatalf("NumForcedGC(%d) > NumGC(%d)", st.NumForcedGC, st.NumGC)
+	}
 }
 
 func TestStringConcatenationAllocs(t *testing.T) {